#include <iostream>
using namespace std;

class my_base_class {
public:
  my_base_class(int initial_value = 0) : x(initial_value) {
    cout << "Inside base class constructor" << endl;
    cout << "x == " << x << endl;
  }
  ~my_base_class() {
    cout << "Inside base class destructor" << endl;
  }
  int get_x() const {
    return x;
  }
private:
  int x;
};

class my_derived_class : public my_base_class {
public:
  my_derived_class(int initial_x_value = 0, int initial_y_value = 0)
    : my_base_class(initial_x_value), y(initial_y_value) {
    cout << "Inside derived class constructor" << endl;
    cout << "x == " << get_x() << endl;
    cout << "y == " << y << endl;
  }
  ~my_derived_class() {
    cout << "Inside derived class destructor" << endl;
  }

private:
  int y;
};

int main() {  
  my_derived_class mdc1;
  my_derived_class mdc2(2, 4);

  return(0);
}